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System for suspending processing by a first electronic device on a data line to allow a second electronic device to use the data line, with subsequent resumption of the processing of the first electronic device

a technology of electronic devices and data lines, which is applied in the direction of program control, instruments, computations using denominational number representations, etc., can solve the problem that data transmission between other electronic devices and the host apparatus cannot be executed

Inactive Publication Date: 2006-06-06
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This solution allows for quick response and efficient data transmission between the host apparatus and all connected electronic devices, even when one device is occupying the data line, by temporarily releasing the data line and resuming processing as needed, thereby enhancing the overall system responsiveness.

Problems solved by technology

However, in the conventional transmission system in which plural electronic devices are connected to one host apparatus through the common data line (for example, data bus), while one electronic device is occupying the data line, data transmission between other electronic device and the host apparatus cannot be executed.

Method used

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  • System for suspending processing by a first electronic device on a data line to allow a second electronic device to use the data line, with subsequent resumption of the processing of the first electronic device
  • System for suspending processing by a first electronic device on a data line to allow a second electronic device to use the data line, with subsequent resumption of the processing of the first electronic device
  • System for suspending processing by a first electronic device on a data line to allow a second electronic device to use the data line, with subsequent resumption of the processing of the first electronic device

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0068]FIG. 1 is a block diagram showing the configuration of a transmission system in accordance with a first embodiment of the present invention.

[0069]FIG. 1 shows a host apparatus 101, n number of electronic devices (where n is an integer of 2 or more) 102, 103, and 104, command signal lines 105, 106 and 107, and a data line 108. In FIG. 1, the electronic device 1 (102), the electronic device 2 (103) and the electronic device n (104) stand for n number of electronic devices.

[0070]The host apparatus 101 has a control part 111 and an input / output part 112. The control part 111 has a saving register for bus release 121. The host apparatus 101 may be any electronic device and in the first embodiment, a portable electronic device (for example, portable information terminal). The host apparatus 101 has a unique identifier. The unique identifier is, for example, a unique combination of 8-digit alphanumeric characters.

[0071]The electronic device 1 has a control part 113 and an input / outpu...

second embodiment

[0102]FIG. 3 is a block diagram showing the configuration of a transmission system in accordance with a second embodiment of the present invention.

[0103]FIG. 3 shows a host apparatus 301, n number of electronic devices (where n is an integer of 2 or more) 302, 303, and 304, a command signal line 305 and a data line 306. In FIG. 3, the electronic device 1 (302), the electronic device 2 (303) and the electronic device n (304) stand for n number of electronic devices.

[0104]The host apparatus 301 has a control part 311 and an input / output part 312. The control part 311 has a saving register for bus release 321. The host apparatus 301 may be any electronic device and in the first embodiment, a portable electronic device (for example, a cellular phone). The host apparatus 301 has a unique identifier. The unique identifier is, for example, a unique combination of 8-digit alphanumeric characters.

[0105]The electronic device 1 has a control part 313 and an input / output part 314. The control p...

third embodiment

[0133]FIG. 5 is a block diagram of a transmission system in accordance with a third embodiment of the present invention.

[0134]FIG. 5 shows a host apparatus 501, n number of electronic devices (where n is an integer of 2 or more) 502, 503, and 504, command signal lines 505, 506 and 507, and a data line 108. In FIG. 5, the electronic device 1 (502), the electronic device 2 (503) and the electronic device n (504) stand for n number of electronic devices.

[0135]The host apparatus 501 has a control part 512 and an input / output part 513. The control part 512 has a saving register for bus release 521 and an interrupt priority determination part 522. The host apparatus 501 may be any electronic device and in the third embodiment, a portable electronic device (for example, portable an information terminal). The host apparatus 501 has a unique identifier. The unique identifier is, for example, a unique combination of 8-digit alphanumeric characters.

[0136]The electronic device 1 has a control p...

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Abstract

To provide a method for controlling a transmission system with quick response in which plural electronic devices are connected to one host apparatus through a common data line. The method for controlling the transmission system of the present invention comprises: a step of transmitting a command signal for releasing the data line and suspending the processing through a command signal line to the electronic device occupying the data line in the state where one of the plural electronic devices is executing the processing that occupies the data line so as to make the electronic device release the data line and suspend the processing and to perform data transmission between the host apparatus and the other one of the electronic devices; and a step of resuming the suspended processing after the data transmission between the host apparatus and the other electronic device.

Description

TECHNICAL FIELD[0001]The present invention relates to a host apparatus, electronic devices, and a method for controlling a transmission system having a host apparatus and electronic devices.BACKGROUND ART[0002]There is a transmission system in which a host apparatus (master apparatus) is connected to plural electronic devices (slave devices) through a common data line and data is transmitted between the host apparatus and the plural electronic devices.[0003]In such transmission system, generally, the host apparatus permits a specific electronic device to occupy a data line and then data transmission between the host apparatus and the electronic device (data transmission from the host apparatus to the electronic device or data transmission from the electronic device to the host apparatus) is executed. When the data transmission is completed, the host apparatus permits another electronic device to occupy the data line and then data transmission between the host apparatus and the elect...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G06F13/00G06F9/00G06F13/26G06F13/34G06F13/362
CPCG06F13/362G06F13/26
Inventor IWATA, KAZUYAADACHI, TATSUYAKASAHARA, TETSUSHINAKAMURA, SEIJI
Owner PANASONIC CORP